Part I. (8 points) Multiple-choice questions

Question 1: According to the Octet Rule, atoms of elements react with each other in order to attain ______ electrons in their outermost energy level or shell?

• A. 2
• B. 4
• C. 6
• D. 8

Question 2: Which of the following elements loses one electron to attain an octet?

• A. Potassium
• B. Helium
• C. Calcium
• D. Fluorine

Question 3: Which of the following elements gains three electrons to attain an octet?

• A. Aluminum
• B. Boron
• C. Nitrogen
• D. Argon

Question 4: Which of the following bonds is covalent and polarized?

• A. $\text{Na} - \text{I}$
• B. $\text{Cl} - \text{Cl}$
• C. $\text{K} - \text{O}$
• D. $\text{H} - \text{F}$

Part II. (2 points) Long answer question

Question 5: Which of the following skeleton structures is plausible? Give a full explanation of your choice.

1.

H — O — Cl

2.

H — Cl — O

3.

Cl — H — O

4.

H — O
 \ /
  Cl